Premium
Super‐ductile PBT alloy with excellent heat resistance
Author(s) -
Hashima Kazuhiro,
Usui Kazuhiro,
Fu Luxiang,
Inoue Takashi,
Fujimoto Kenichiro,
Segawa Kentaro,
Abe Tomiya,
Kimura Hitoshi
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21080
Subject(s) - materials science , composite material , linear low density polyethylene , ultimate tensile strength , differential scanning calorimetry , copolymer , alloy , annealing (glass) , polymer , physics , thermodynamics
A super‐ductile PBT alloy with excellent heat resistance was successfully fabricated by reactive blending of poly(butylene terephthalate) (PBT) with poly(ethylene‐ co ‐glycidyl methacrylate) together with linear low density polyethylene (LLDPE) and hydrogenated styrene‐butadiene‐styrene block copolymer (SEBS). It possesses a unique tensile stress–strain curve with no yielding point and large elongation at break, moreover, the alloy did not show serious deterioration of the mechanical properties by high temperature annealing at 150°C for 96 h. The structure‐properties relationship is discussed on the basis of transmission electron microscopy, differential scanning calorimetry, dynamic mechanical analysis, and wide‐angle X‐ray diffraction analysis. The outstanding ductile nature seems to come from the negative pressure effect of LLDPE (or LLDPE/SEBS) particles that dilates the PBT ligament matrix to enhance the local segment motions. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers.